한국전자파학회논문지 (The Journal of Korean Institute of Electromagnetic Engineering and Science)

  • 제29권2호
  • /
  • Pages.138-141
  • /
  • 2018
  • /
  • 1226-3133(pISSN)
  • /
  • 2288-226X(eISSN)
한국전자파학회 (The Korean Institute of Electromagnetic Engineering and Science)
권호 표지
DOI QR코드

DOI QR Code

W-대역 영상레이다를 위한 광대역 Chirp 신호 발생장치

Wideband Chirp Signal Generation for W-Band SAR

  • 이명환 ((주)밀리시스) ;
  • 정진미 ((주)밀리시스) ;
  • 이준섭 (광주과학기술원 기계공학과) ;
  • ;
  • 김용훈 (광주과학기술원 기계공학과, (주)밀리시스)
  • Lee, Myung-Whan (millisys Inc.) ;
  • Jung, Jin Mi (millisys Inc.) ;
  • Lee, Jun Sub (School of Mechanical Engineering, Gwangju Institute of Science and Technology) ;
  • Singh, Ashisg Kumar (School of Mechanical Engineering, Gwangju Institute of Science and Technology) ;
  • Kim, Yong Hoon (School of Mechanical Engineering, Gwangju Institute of Science and Technology, millisys Inc.)
  • 투고 : 2017.03.27
  • 심사 : 2018.02.14
  • 발행 : 2018.02.28
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

본 논문에서는 FPGA를 이용하여 디지틀 방식으로 영상 레이다에 사용하는 주파수 변조된 첩(Chirp) 신호를 생성하고, 이 신호를 I-Q 변조하여 RF 신호로 변환 한 후 24 주파수 체배기로 체배하여 94 GHz W-대역에서 광대역 첩 신호발생 장치의 설계, 제작한 연구 결과를 제시한다. 개발된 첩 발생기는 94 GHz의 캐리어 주파수와 960 MHz의 대역폭을 가지는 주파수 변조된 신호이며, 평탄도는 IF단(3.9 GHz)에서 1 dB 이내, W-대역에서 2 dB 이내 그리고 3 W의 출력을 보여주고 있다.

In this paper, we describe the designed digital waveform of a linear frequency-modulated (FM) chirp signal using field-programmable gate arrays (FPGAs) for image radar, and this signal is modulated with an I-Q modulator, and multiplied by 24 frequency multipliers to obtain a 94-GHz W-band wideband chirp generator. The developed chirp generator is an FM signal with a 94-GHz carrier frequency and a 960-MHz bandwidth, and the flatness is less than 1.0 dB at intermediate frequency (IF) (3.9 GHz), 2.0 dB in the W-band, and it has a 0.3-W output power in the W-band.

키워드

참고문헌

  1. S. Stanko, W. Johannes, R. Sommer, A. Wahlen, J. Wilcke, and H. Essen, et al., "SAR with MIRANDA- millimeterwave radar using analog and new digital approach," in 2011 8th European Radar Conference, Manchester, Oct. 2011, pp. 214-217.
  2. M. Y. Chua, V. C. Koo, "FPGA-based chirp generator for high resolution UAV SAR," Progress In Electromagnetics Research, vol. 99, pp. 71-88, 2009. https://doi.org/10.2528/PIER09100301
  3. A. G. Stove, "Linear FMCW radar techniques," in IEE Proceedings F(Radar and Signal Processing), Oct. 1992, vol. 139, no. 5, pp. 343-350. https://doi.org/10.1049/ip-f-2.1992.0048
  4. J. A. Johnston, A. C. Fairhead, "Waveform design and Doppler sensitivity analysis for nonlinear FM chirp pulses," in IEE Proceedings F(Communications, Radar and Signal Processing), Apr. 1986, vol. 133, no. 2, pp. 163-175. https://doi.org/10.1049/ip-f-1.1986.0027
  5. Xilinx, May 2017. Available: https://www.xilinx.com/support/documentation/data_sheets/ds182_Kintex_7_Data_Sheet.pdf.
  6. Analog devices. Available: http://www.analog.com/en/design-center/evaluation-hardware-and-software/evaluationboards-kits.